01038cam a22002891  4500001001300000003000400013005001700017008004100034010001700075035001900092040004600111043001200157050002200169051001700191082001100208086001600219100003500235245019800270260004800468300004300516490004500559504002500604650001600629650001500645650003000660810005800690gs 52000121 DLC20260227111358.0801205s1951    dcuaf    b   f001 0 eng c  ags 52000121   a(OCoLC)7003545  aU.S. Geol. Survey. Libr.cNcGrEdISSdDLC  an-us---00aQE75b.P9 no. 239  aQE807.A5bC6  a564.530 aI 19.16:2391 aCobban, William Aubrey,d1916-10aScaphitoid cephalopods of the Colorado group.bEvolution of Scaphites and related genera, with descriptions and illustrations of new species and a new genus from western interior United States.  aWashington,bU.S. Govt. Print. Off.,c1951.  aiii, 42 p.billus., 21 plates.c29 cm.1 aGeological Survey professional paper 239  a"References": p. 39. 0aAmmonoidea. 0aScaphites. 0aPaleontologyyCretaceous.2 aGeological Survey (U.S.).tProfessional paper ;v239.